D-Rock is a band formed by Derek Venturi, Sam, and Ralph, who are three good friends. The band is first introduced in the episode "Battle of the Bands", where the band prepares to in the Clash of the Bands contest.
D-Rock is rock band with Ralph on drums, Sam on base guitar and Derek as lead guitar. Casey
was their lead singer for The Clash of The Bands Contest but never performed with them again after.